第076句:工农业效率

Furthermore, it is obvious that the strength of a country s economy is directly bound up with the efficiency of its agriculture and industry, and that this in turn rests upon the efforts of scientists and technologists of all kinds.

译文：再者，显而易见的是，一个国家的经济实力与其工农业效率直接相关，而效率的提高则有赖于各类科学家和技术专家的努力。

点睛：

该句中it是句子的形式主语，真正的主语是两个由that引导的并列的主语从句。第二个逗号后的this指代的是第一个主语从句中的the efficiency of its agriculture and industry.be bound up with意为“与…紧密相关”。in tum此处意为“反之，反过来”。rest upon意为“依赖于”。

考点归纳：

与名词turn相关的常见短语还有：

*be one’s turn( to do sth.) 轮到某人（做某事）
It’s your turn to read the article.
轮到你念文章了。

*on the turn在转变之中
Maybe my luck is on the turn.
也许我要转运了。

*by turns依次，轮流地
That night you were silly,witty and mournful by turns.
那天晚上，你先是傻乎乎的，然后变得很风趣，最后又悲伤起来。